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Drywall over plaster

Posted by Dave L on May 1st, 2002 04:24 PM

My house was built in 1945 and it seems like the outside walls are plasterboard attached directly to the exterior brick. My bathroom which is in the SW corner of the house is very cold and the paint on the S and W walls is beginning to peel. I'm thinking this is because A)the difference in temp between the wall and interior and B) the proximity of the peeling to the lavatory. I would like to install drywall on top of the plasterboard to fix the problem and help with the insulation. Should I apply the drywall directly to the plasterboard (the plasterboard is secure)? Should I use furring strips and attach drywall to them and, if so, should I add insulation and/or a plastic moisture barrier behind it? What about std drywall vs moisture resistant drywall?
Thanks, Dave

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